Fruit Fly Trap

I bought this fruit fly trap at Lowe's. We have fruit flies everywhere! I put it in the kitchen first. Then we had condensed milk with expired dates to leak in the pantry. I didn't catch it very soon so we had fruit flies there by the time I was cleaning it up. After a day in the pantry, I moved it back to the kitchen.

I wish I'd bought two of them or that Lowe's was closer.